
<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <link rel="shortcut icon" href="../../images/favicon.ico">
    <title>流佳庄2015春节联欢会</title>
    <style type="text/css">
        body{
            background-color:#000;
        }
        *{
            padding:0px;
            margin:0px;
        }
        #perspective{
            perspective: 1000px; /*设置视角距舞台的距离还可已设置是否透视，默认为否*/
        }
        #wrap{
            width:133px; /*外包装*/
            height:200px;
            position:relative;
            top:0;
            left:0;
            margin:50px auto;
            transform-style:preserve-3D;
            transform:rotateX(-10deg);
        }
        #wrap img{
            width:100%;
            height:100%;
            position:absolute;
            top:0px;
            left:0px;
            border-radius:6px;
            box-shadow:0px 0px 15px #00FA9A;
            box-reflect:below 6px  -webkit-gradient(linear, left top, left bottom, from(transparent), color-stop(0.5, transparent), to(white));/*倒影*/
            -webkit-box-reflect:below 6px  -webkit-gradient(linear, left top, left bottom, from(transparent), color-stop(0.5, transparent), to(white));	/*倒影*/
            -moz-box-reflect:below 6px  -webkit-gradient(linear, left top, left bottom, from(transparent), color-stop(0.5, transparent), to(white)); /*很遗憾，火狐不支持*/
            cursor:pointer; /*手型*/
        }
    </style>
</head>
<body>
<div class="dengziqi">
    <audio src="music/See You Again.mp3" autoplay  loop="loop">
    </audio>
</div>
<div id="perspective"> <!-- 相当于舞台 -->
    <div id="wrap">   <!-- 相当于外包装 -->
        <img src="images/lj1.jpg"/>
        <img src="images/lj2.jpg"/>
        <img src="images/lj3.jpg"/>
        <img src="images/lj4.jpg"/>
        <img src="images/lj5.jpg"/>
        <img src="images/lj6.jpg"/>
        <img src="images/lj7.jpg"/>
        <img src="images/lj8.jpg"/>
        <img src="images/lj9.jpg"/>
        <img src="images/lj10.jpg"/>
        <img src="images/lj11.jpg"/>
        <img src="images/lj12.jpg"/>
        <img src="images/lj13.jpg"/>
        <img src="images/lj14.jpg"/>
        <img src="images/lj15.jpg"/>
        <img src="images/lj16.jpg"/>
        <img src="images/lj17.jpg"/>
        <img src="images/lj18.jpg"/>
    </div>
</div>

<script type="text/javascript">
    /*
     总结：
     首先将每个图片赋值一个不同的角度和一个偏移位置
     然后在拖放时实时更新这个角度和偏移量
     在拖放结束时逐渐减小这个角度和偏移量
     也可以做成只在平面转动的，只要不改变rotateX就行
     */
    window.onload =function(){
        var wrapDom = document.querySelector("#wrap"); //获取wrap
        var imgDom = document.getElementsByTagName("img");//获取wrapimg
        var wrap = document.getElementById('wrap');
        var len = imgDom.length;//获取img的长度
        var imgDeg = 360/len; //平分360度
        for(var i=0;i<len;i++){  //分别赋值每个img一个rotateY(沿Y轴转动)和translateZ(偏移位置)
            imgDom[i].style.transform= "rotateY("+i*imgDeg+"deg) translateZ(350px)";
            imgDom[i].style.transition ="transform 1s "+(len-1-i)*0.2+"s";
        }
        var lastx,lasty,nowx,nowy,changeX,changeY,roX=-10;roY=0; //初始化新旧鼠标坐标 每次改变坐标大小 和rotateX和rotateY初始值

        center(); //执行函数
        window.onresize =center;//当缩放窗口时调用函数
        function center(){ // 垂直居中啊
            var mt = window.innerHeight/2-wrapDom.offsetHeight;  //获取窗口高度除以二再减去容器高度=容器顶距窗口顶的距离
            wrapDom.style.cssText = "margin-top:"+mt+"px";
        }
        setTimeout(function(){
            wrap.style.backgroundImage = "url(./img/12.jpg)";
        },2000)

        document.onmousedown = function(e){
            clearInterval(timer)
            var timer = null;
            var ev = e||window.event;//兼容事件
            lastx = ev.clientX;  //当前鼠标位置
            lasty = ev.clientY;
            this.onmousemove = function(e){

                clearInterval(timer)
                var ev = e||window.event;
                var nowx = ev.clientX; //现在鼠标位置
                var nowy = ev.clientY;
                changeX=nowx-lastx;   //x轴变化了多少
                changeY=nowy-lasty;	//y轴变化了多少
                roY+=changeX*0.1;		//调节转的速度
                roX-=changeY*0.1;		//调节转的速度

                wrapDom.style.transform="rotateX("+roX+"deg) rotateY("+roY+"deg)"; //赋值新的rotateX和rotateY
                lastx=nowx;  //将旧的数据更新
                lasty=nowy;	//将旧的数据更新

            }
            this.onmouseup = function(){
                this.onmousemove = null;	//取消移动事件
                timer=setInterval(function(){	//设定时器逐渐减小rotateX和rotateY
                    changeX*=0.95;  //每30毫秒rotateX减少5%
                    changeY*=0.95;	//每30毫秒rotateY减少5%
                    roY+=changeX*0.2; //调节转的速度
                    roX-=changeY*0.2; //调节转的速度
                    wrapDom.style.transform="rotateX("+roX+"deg) rotateY("+roY+"deg)";//赋值新的rotateX和rotateY

                },30)
            }
            return false; //取消默认事件
        }
    }

</script>
</body>
</html>

